Princess Diana’s favourite fashion designer Catherine Walker left her entire estate of more than £4million to her husband.

French-born Ms Walker, who died aged 65 in September 2010, produced more than 1,000 outfits for the Princess from her Chelsea headquarters over 16 years.

Diana was even buried in one of her black dresses, which she bought just weeks before she died in a car crash in Paris in 1997.

Catherine Walker, right, was a favourite of the Princess of Wales, pictured left at London's Coliseum in 1989 wearing one of the designer's trademark creations

The Duchess of Cambridge wore the Catherine Walker dress to a tree planting ceremony in July last year

The Duchess of Cambridge has followed in the footsteps of her late mother-in-law by wearing Catherine Walker outfits and her mother, Carole, wore one to her daughter’s wedding to Prince William last year.

Ms Walker designed dresses and ball gowns for many of the world’s most beautiful women.

Known for her discretion, her other high-profile clients included Shakira Caine, Darcey Bussell, Joely Richardson and Queen Noor of Jordan.

Probate records released more than two years after her death reveal that the reclusive and hard- working Ms Walker left a net estate of £4,162,572.